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Finding the Fourth Proportional to 48,339.86, 72,506.86 and 28,743.12

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Solution

The fourth proportional to 48,339.86, 72,506.86 and 28,743.12 is: 43,112.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,339.86 : 72,506.86 = 28,743.12 : x
  2. Step 2: Convert to fraction form
    48,339.86/72,506.86 = 28,743.12/x
  3. Step 3: Cross multiply
    48,339.86x = 72,506.86 × 28,743.12
  4. Step 4: Simplify right side
    48,339.86x = 2,084,073,305.95
  5. Step 5: Solve for x
    x = 2,084,073,305.95/48,339.86
  6. Step 6: Final answer
    x = 43,112.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.